Driver Door Module (DDM)

The Driver's Door Module (DDM) directly controls the driver's door lock actuator motor, the driver window and the driver outside reas view mirror.

The DDM receives the passenger door lock and the driver door lock messages via the SBI system and forwards driver's door switch lock request messages to the Remote Function Actuator (RFA) via the Class 2 serial data link. The RFA receives the request message and checks for lockout prevention criteria. If the conditions are proper, the RFA sends a lock or unlock command message back to the DDM via the Class 2 serial data circuits. The DDM forwards door lock messages received from the Remote Function Actuator (RFA) to the Passenger Door Module (PDM) and the Rear Door Module (RDM) over the simple bus interface (SBI).

Battery voltage is always applied to the DDM through a dedicated DDM fuse in the IP fuse block.